https://scotttactical.com/tags/adafruit/Recent content in Adafruit on Scott TacticalHugoen-usMon, 12 Oct 2026 21:00:00 -0700https://scotttactical.com/sourcing-a-car-computer/Mon, 12 Oct 2026 21:00:00 -0700https://scotttactical.com/sourcing-a-car-computer/<!-- PLACEHOLDER (hero): bench flat-lay of every part as it arrived. File: static/images/car_computer/sourcing-flatlay.jpg Used as both the front-matter hero and a body figure. Capture once all parts are in. --> <p>The whole build starts with one stubborn constraint: the truck sits for days at a time, and when it sits, nothing is supposed to be awake. This is a computer for a 1969 Chevy Blazer (and a second truck, a Dodge). It sleeps until my phone comes near, wakes, boots, and talks. Offline-first, low power, always-on <em>sentry</em> that draws almost nothing and a real computer that stays dark until it is needed.</p>